How To Fix BGRFC135 - Communications error when determining resources: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 135

• Message text: Communications error when determining resources: &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC135 - Communications error when determining resources: &1 ?

  The SAP error message BGRFC135 indicates a communications error that occurs when the system is trying to determine resources in a background RFC (bRFC) scenario. This error can arise due to various reasons, including network issues, configuration problems, or issues with the RFC destination.
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP systems involved in the bRFC communication.
  RFC Destination Configuration: The RFC destination may not be correctly configured or may be inactive.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Load: High system load or performance issues can lead to timeouts or communication failures.
  Transport Layer Issues: Problems with the transport layer (e.g., TCP/IP) can also cause communication errors.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the systems is stable and functioning properly. You can use tools like ping or traceroute to diagnose network issues.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 and check the configuration of the RFC destination. Ensure that it is correctly set up and that the connection test is successful.
  Make sure the destination is active and that the connection type is appropriate for your scenario.
  
  
  
  Review Authorizations:
  
  Check the user credentials used for the RFC connection. Ensure that the user has the necessary authorizations to perform the required actions.
  
  
  
  Monitor System Performance:
  
  Use transaction SM50 or SM66 to monitor system performance and check for any long-running processes or high resource usage that might be affecting communication.
  
  
  
  Check for System Logs:
  
  Review the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  Adjust Timeout Settings:
  
  If the issue is related to timeouts, consider adjusting the timeout settings for the RFC connection in transaction SM59.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that might address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  bRFC (Background RFC): This is a mechanism in SAP that allows asynchronous communication between different SAP systems or between different processes within the same system.
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  SLG1: Application Log
  SM50/SM66: Process Overview
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the BGRFC135 communications error effectively.